It’s a similar observation made by Kingsville resident Peter Camilleri, whose 10-year-old son has been sick and in hospital with low temperatures, coughing and "serious" nosebleeds twice since the fire.

"He's had asthma for the last eight years - we know how to deal with it," he said. "I know his asthma back to front, this is different.

"It’s a wailing cough, rather than a barking cough, and his preventor hasn’t helped him this time."

Mr Camilleri said the doctors had noted the fire on his son’s medical paperwork, but had made no firm conclusions about whether his illness was related to the blaze.

Greens MP for Western Metro Huong Truong said her party had surveyed residents via social media since the fire.

She said 35 per cent of the 433 respondents claimed they had suffered headaches, while 32 per cent said they had experienced respiratory problems and 24 per cent had sore throats.

Ms Truong said not enough was being done to inform residents.

"When hundreds of people, including entire families are reporting symptoms we deserve to know exactly what we have been breathing," Ms Truong said.

EPA chief environmental scientist Dr Andrea Hinwood said on Monday that the department had not "measured any levels of odour or airborne contaminants that would trigger further health investigation".

"However, those in close contact with the creek will certainly have experienced odour and the EPA reiterates the advice to stay clear of the waterways," she said.

Dead fish, eels and other marine life washed up on the banks of Stony Creek after toxic chemicals and firefighting foam entered the creek while crews worked to extinguish the blaze.

Dr Hinwood said the agency was in the process of taking air samples to measure Volatile Organic Compounds - organic chemicals that may cause harm to human health.

"Sampling to date shows low concentrations of VOCs," she said.

A health department spokesman said there had been no increase in emergency department presentations, or ambulance callouts for respiratory cases since the fire, but urged people to see their doctor if they were concerned.

But Ms McLaren said she was still unconvinced and the community needed solid answers.

“My biggest concern is, what are the long-term effects?” she said.

It is still unclear how long the clean-up of Stony Creek will take, with the EPA saying it will "continue to inform the community of progress".

Mr Camilleri said he was now considering moving out of the area to stay with relatives until the pollution had cleared.